package com.atguigu.eduservice.controller;


import com.atguigu.commonutils.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.vo.TeacherQuery;
import com.atguigu.eduservice.service.EduTeacherService;
import com.atguigu.servicebase.exceptionhandler.GuliException;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author atguigu
 * @since 2024-10-15
 */
@Api(description="讲师管理")
@RestController
@RequestMapping("/eduservice/teacher")
//@CrossOrigin
public class EduTeacherController {

    //访问地址：http://localhost:8001/eduservice/teacher/findAll
    //把service注入
    @Autowired
    private EduTeacherService teacherService;

    //1 查询讲师表所有数据
    //rest风格
    @ApiOperation(value = "所有讲师列表")
    @GetMapping("findAll")
    public R findAllTeacher(){
        //调用service的方法实现查询的所有的操作
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items",list);
    }

    //2 逻辑删除讲师的方法
    @ApiOperation(value = "逻辑删除讲师")
    @DeleteMapping("{id}") //id值需要通过路径进行传递
    public R removeTeacher(@ApiParam(name = "id", value = "讲师ID", required = true)
                               @PathVariable String id){//得到路径中的id值
        boolean flag = teacherService.removeById(id);
        if (flag){
            return R.ok();
        }else
            return R.error();
    }

    //3 分页查询讲师的方法
    //current:当前页
    //limit：每页记录数
    @ApiOperation(value = "分页讲师列表")
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@ApiParam(name = "current",value = "当前页码",required = true)@PathVariable long current,
                             @ApiParam(name = "limit",value = "每页记录数",required = true)@PathVariable long limit){

        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        try {
            int i = 10/0;
        }catch (Exception e){
            //执行自定义异常
            throw new GuliException(20001,"执行了自定义异常处理...");
        }


        //调用方法实现分页
        //调用方法时候，底层封装，把分页所有数据封装到pageTeacher对象里面
        teacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合

        //第一种方法
        return R.ok().data("total",total).data("rows",records);

        //第二种方法
//        Map map = new HashMap();
//        map.put("total",total);
//        map.put("rows",records);
//        return R.ok().data(map);
    }

    //4 条件查询带分页的方法
    @ApiOperation(value = "条件分页讲师列表")
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable long current, @PathVariable long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){//required = false表示这个参数值可以为空
        //创建page对象(分页)
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        //改写到service层
        R r = teacherService.getTeacherList(pageTeacher,teacherQuery);
        return r;

       /* //构建条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        //多条件组合查询
        //mybaits学过 动态sql
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空，如果不为空拼接条件
        if (!StringUtils.isEmpty(name)){
            //构建条件
            wrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)){
            wrapper.eq("level",level);//eq等于
        }
        if (!StringUtils.isEmpty(begin)){
            wrapper.ge("gmt_create",begin);//ge大于等于,gmt_create是数据库表中字段名称
        }
        if (!StringUtils.isEmpty(end)){
            wrapper.le("gmt_modified",end);//le小于等于
        }

        //排序(降序)
        wrapper.orderByDesc("gmt_create");

        //调用方法实现条件查询分页
        teacherService.page(pageTeacher,wrapper);

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合
        return R.ok().data("total",total).data("rows",records);*/
    }

    //5 添加讲师接口方法
    @ApiOperation(value = "新增讲师")
    @PostMapping("addTeacher")
    public R addTeacher(@ApiParam(name = "eduTeacher",value = "讲师对象",required = true)
                            @RequestBody EduTeacher eduTeacher){
        //改写到service层
        boolean save = teacherService.addTeacher(eduTeacher);
        if (save){
            return R.ok();
        }else
            return R.error();

       /* boolean save = teacherService.save(eduTeacher);
        if (save){
            return R.ok();
        }else
            return R.error();*/
    }

    //6 根据讲师id进行查询
    @ApiOperation(value = "根据id查询讲师")
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@ApiParam(name = "id",value = "讲师id",required = true)
                            @PathVariable String id){
        EduTeacher eduTeacher = teacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }

    //7 讲师修改功能  测试时候,json数据需要有id值
    @ApiOperation(value = "根据id修改讲师")
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = teacherService.updateById(eduTeacher);
        if (flag){
            return R.ok();
        }else{
            return R.error();
        }
    }

    @ApiOperation(value = "根据id修改讲师")
    @PutMapping("updateTeacher/{id}")
    public R updateTeacher1(@ApiParam(name = "id",value = "讲师id",required = true)@PathVariable String id,
                            @ApiParam(name = "eduTeacher",value = "讲师对象",required = true)@RequestBody EduTeacher eduTeacher){
        eduTeacher.setId(id);
        boolean flag = teacherService.updateById(eduTeacher);
        if (flag){
            return R.ok();
        }else
            return R.error();
    }
}

